Crandall, R. and Pomerance, C. Prime Numbers: A Computational Perspective, 2nd ed. New York: Springer-Verlag,
2005.Ibstedt, H. "Smarandache Concatenated Sequences." Ch. 5
in Computer
Analysis of Number Sequences. Lupton, AZ: American Research Press, pp. 75-79,
1998.Mudge, M. "Not Numerology but Numeralogy!" Personal
Computer World, 279-280, 1997.Sloane, N. J. A. Sequence
A019518 in "The On-Line Encyclopedia
of Integer Sequences."Smith, S. "A Set of Conjectures on Smarandache
Sequences." Bull. Pure Appl. Sci.15E, 101-107, 1996.
th
Smarandache-Wellin number is obtained by concatenating the decimal digits
of the first 
primes, where 
is a positive integer.
These numbers form a consecutive number
sequence. The first few are 2, 23, 235, 2357, 235711, ... (OEIS A019518;
Smith 1996, Mudge 1997). These numbers give successively longer initial digit strings of the Copeland-Erdős
constant.
